They should be fine in an unheated greenhouse. I've seen them overwinter outside around here lots of years, especially if they're under an eave (rain protection). It seems what really does them in is the combination of wet and cold. Can't say I blame 'em. Who likes being cold and wet?

It's a snap here. Cut back to hard wood and set 'em in a cool spot...as above or unheated garage. In time these become quite large and put on a tremendous display.

Cheers, Barrie.

OK. Thanks for the messages. I will try green house, garage (nestled amongst my son's engine and other sundry car parts collection!) and indoors...that should cover all bases.

Toward the end of Oct. I yank them out of the soil and shake off the roots and put them upside down is paper bag in an old shed. I don't think about them again until Feb. or March when I pot them up. Nearly all flourish.

If memory serves, there were an astonishing number of web sites on this very subject.

TACHE ... I assume you close the tops of the bags? Do you remove the foliage? Cut the plants back? The temperature in your shed...stays above freezing all winter??

I grow most of my pelargoniums in pots, so when the weather gets bad & it gets cold at night, I first move them next to the house, under the eaves & keep them on the dry side. When it's about to freeze, I move them into the garage for the winter.

Patrick